Frame for track-drills



(No Model.)

A. A. STROM.

- FRAME FOR TRACK DRILLS. No. 337,455. Patented Mar. 9, 18865 AXEL ALBIN STROM, OF CHICAGO, ILLINOIS.

FRAME Fo'R TRACK-DRILLS.

SPECIFICATION forming part of Letters Patent No. 337,455,1iated March 9, 1886.

Application filed February 11, 1884. Renewed February 4, 1886. Serial No. 190,832. (No model.)

To all whom it may concern.-

Be it known that I, AXEL ALBIN STRoM, a citizen of the United States, residing at Austin, in the county of Cook and State of 1llinois,. have invented a 'new and useful Frame for Track-Drills, of which the following is a specification.

The object of my invention is to provide a frame for track-drills used in drilling ordinary T-rails, combining all of the desirable and none of the objectionable features of the frames heretofore in use, and provided in addition with a rigid extension project-ing inward, to serve as a bearing for a pivoted selffeeding device, as hereinafter set forth.

Figure 1 is a top View of the invention. Fig. 2 is an end view. Fig. 3 is a side view.

Similar letters refer to similar parts throughout the several views.

A is a bar, upon which slides the movable rest a for the head of a drill-stock. The movable rest a is constructed so as to easily slide from one end of the bar A to the other. A number of holes can be drilled in a rail or near the ends of two rails without moving the frame by moving the rest a to a position on the bar A opposite the desired points in the rail or rails.

B B are the arms of the frame, either made in one piece with or securely joined with or fastened to the bar A. These arms B B are provided with hooks b 1;, constructed, as shown in the drawings, so as to clasp firmly the foot of the rail. The arms B B are curved, as shown in the drawings, so that when the frame is placed in position the bar A is elevated from the ground or ties upon which the frame rests. The arms B B are made of sufficient length to remove the bar A to such a distance from the rail when the frame is placed in position that a drill and drill stock may be inserted between the bar A and the rail, the head of the drillstock in the rest a, and the point of the drill against the rail.

Attached to the sliding rest a or a part of it is a rigid extension, 0, projecting inward from it to serve as a bearing for the pivoted self-feeding device.

Pivoted in the rigid extension 0 is the device for automatically regulating the feed of a ratchet-drill, which device I have fully, clearly, and accurately described in the specification forming part of my application for Letters Patent for improvement in self-feeding ratchet-drills, which application is now on file and pending. This device, pivoted in the rigid extension 0, consists of a lever, D, latch F, and dog E. The lever D and dog E are made in one piece, and the latch F is pivoted to the lever D. Y

The purpose and operation of the lever D, latch F, and dog E, in connection with a ratchet drill of the construction set forth in the said specification forming part of my said application for Letters Patent for improvementin self-feeding ratchet-drills, are fully, clearly, and accurately described and explained in said specification, reference to which is hereby made, and are not more specifically explained herein, because in this application Letters Patent are requested only for the improvement in a frame for trackdrills consisting of the bar A, arms B B, pro- Vided with hooks I) b, movable rest a, sliding on the bar A, and provided with a rigid extension projecting inward from it to serve as a bearing for the pivoted self-feeding device.

\Vhen it is desired to drill a rail, the frame is placed in position as shown in Fig. 1. The drill and drill-stock are then inserted with the point of the drill against the rail and the head of the drill-stock in the rest a.

It will be seen that no wedge is required to hold the frame in place and no support is needed for the bar A, nor need the bar A rest upon the ties or ground, for the hooks hold the frame in the desired position.

The frame is easily placed in position, and the drill can be left in the track without the slightest danger to or from passing trains.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

A frame for track-drills, comprising the bar A, and arms B B, provided with hooks b b, in combination with the movable rest a, sliding on the bar A, and provided with rigid extension 0, projecting inward from it to serve as a bearing for the pivoted self-feeding device, substantially as described.

AXEL ALBIN STROM.

Witnesses:

A. HENRY MULLIKEN, THOMAS D. Tom). 

